mindflow.pde.sympy_to_mindspore

mindflow.pde.sympy_to_mindspore(equations, in_vars, out_vars, params=None)[source]

The sympy expression to create an identifier for mindspore.

Parameters

equations (dict) – the item in equations contains the key defined by user and the value is sympy expression.
in_vars (list[sympy.core.Symbol]) – list of all input variable symbols, consistent with the dimension of the input data.
out_vars (list[sympy.core.Function]) – list of all output variable symbols, consistent with the dimension of the output data.
params (list[sympy.core.Function]) – list of all parameter variable symbols.

Returns

List([FormulaNode]), list of expressions node can be identified by mindspore.

Supported Platforms:: Ascend GPU

Examples

>>> from mindflow.pde import sympy_to_mindspore
>>> from sympy import symbols, Function, diff
>>> x, y = symbols('x, y')
>>> u = Function('u')(x, y)
>>> in_vars = [x, y]
>>> out_vars = [u]
>>> eq1 = x + y
>>> eq2 = diff(u, (x, 1)) + diff(u, (y, 1))
>>> equations = {"eq1": eq1, "eq2": eq2}
>>> res = sympy_to_mindspore(equations, in_vars, out_vars)
>>> print(len(res))
eq1: x + y
    Item numbers of current derivative formula nodes: 2
eq2: Derivative(u(x, y), x) + Derivative(u(x, y), y)
    Item numbers of current derivative formula nodes: 2
2